Changeable-speed-gear transmission



May 5, 1925...

1,536,181 A. lDE

CHANGEABLE SPEED GEAR TRANS MI 5 S I OH Filed May 23, 1924 7 46 INYENTUR:

Patented May 5, 1925. 1

UNITED STATES ANDRE Inn,- on ANTWERLP, BELGIUM.

GHANGEABLE-SPEED-GEAR TRANSMISSION.

Application filed May 23,.

To all whom it may] concern: Be it known that I, Annals Inn, a subject of theKing of the Belgians, and resident of 84: gAvenue Marie, Antwerp, Belgium,

have invented certain new and useful Improvements specification. a 'My present "1111 811131011 relates to improvesions. v

, One of the objects of my invention isto provide a transmission gear of this class which is very simple in construction and comprises only a very little number of gear wheels, at the same time being capable of producing two, three or more speeds accordingto requirements. I

A further 0b ect of my invention is to reduce the consumption of motive power absorbed by the transmission gear, by the use of a fly-wheel as gear-wheelwhich imparts inertia forces to all the members in the changeable gear speed casingor the differential gear, so as to considerably relieve the ball bearings thereof. l q Thechangeable speed gear transmission is illustrated diagrammatically inthe accompanying drawings, wherein:

Fig. 1 is a horizontal section of the device on a plane passing through the rear wheelaxler 1 Fig. 2 is an elevation of the gear-wheels.

The gear is entirely enclosed within a casing. 1, formed of two parts assembled by means of flanges 2. Said easingcontains the differential gear 3 which may be of any known construction and mounted on the section 15 of the rear wheel-axle 147-15. Therefore said casing 1 will be mounted on both sections 14-,15 of the rear wheel-axle by means of ball-bearings 16. l The casing fofthe differential gear is made integral with a combined spur-wheel and fly-wheel 1., the free face of which is provided with a bevel gear wheel 5, made also integral-with the fly-wheel. 4 and the casing 8 ential gear.- The combined spur-wheel and fly-wheel {1 meshes continuously with a small gear-wheel 6 decreasing the ratio of transmissions and loosely mounted on a shaft 17 held in the wall of the casing 1. The shaft 17 is provided with a disc 7 having concentric sets of teeth 7 The disc 7 and gear wheel 6 are connected for unit movement in Changeable-Speed-Gear. Transmlssions, of whlch the following is a it of the differ- 1924. Serial No. 715,424; 7

wheel such as 41- which serves at the same time .as a gear-wheel is very important and constitutes one ofthe characteristic features ofjmy invention; In fact saidfly-wheel im parts inertia forces to all the members of 1 the changeable speed gear transmission and ments in changeable speed gear transmis- .less fuel.

The driveshaft 13 extends into the casing 1 and is journaled in ball bearings at suit- 7 able. points. At its end the drive shaft 13 carries a bevel gear wheel 8, loosely mounted on saidshaft bymeans of ball bearings and meshing continuously with the bevel gear-wheel. 5. The. drive shaft 13 is .made hexagonal in cross section on the section lying within the casing land a spur.

wheel 9 is mounted on the hexagonalportion ofthe drive shaft 13 in position tobe moved to selectively cooperate with either set of v teeth 7 on the disc 7'. The bevel gear-wheel through the agency of a friction clutch 20, fast on the hexagonal portion and a friction cone and the spur-wheel 9v may .be moved longitudinally by means of slidable sleeves '11 and 12 actuated by shifting rods 10and 8 may be driven by the drive shaft 13 a actuated'by the shaft 13,-thespur-wheel 9 will be out of mesh and inoperative be tiween the different concentric toothings on lsc 7-. A

In the embodiment illustrated in the drawings, I have shown by. way of examplea changeable speed gear transmission de signed for three differentiates of speed. If the spur-wheel 9 is not in mesh with either concentric gear-wheel on disc 7 and the bevel gear-wheel 8 actuated by its clutch, the movement will be transmitted directly from the drive-shaft to the rear wheel axle through the agency of the bevel gear wheel 5 and thejdifferential gear 3:" If the'clutch' 20 is disengaged from the bevel gear wheel 8 and the spur-wheel 9 meshes with either be provided at any required point and the' shifting of th'e clutch 20 of the bevel gear wheel 8 or theslidable sleeve 11 for the spur-wheel 9 may be effected by any suitable means. v I

As will be understood my improved" changeable speed gear transmission of sim ple' and strong construction having only a few machined parts and applicable to any motor vehicle for any desired number of speeds. The casing l'will be provided with an oil-well for the lubrication of the various parts, and for thepurpose' of avoidingnoise the teeth ofthe gear wheel will be cut obliquely whereby jerlrs willbeavoided.

It is obvious that my presentchangeable speed gear transmission also enables the car to e driven backwar'dly To this. end

it will be" suiiicient to disengage the clutch 20 from the bevel-pinion- 8 andthrow the spur-wheel 9 into mesh preferably: with the gear wheer on disc 7 which is the nearest to the centre thereof and in advance of said centre. I I a IIavingi 1ow fully described said in--' vention, what I claim and desire to secure by Letters Patent; is

l. A changeable speed gear transmission for "motor-cars and the like; comprising a casing, in which are mounted the. ends of the rear wheel-axle shafts; a differential gear box housed within said casing and mounted on the ends of said wheel-axle shafts, a spur-gear wheel integral with said box, a bevel said spur-'g-e'ar-wheel, a" drive-shaft angular cross section journaled within said casing, a journal of circular cross section at the end of-sa'id shaft located withinthe casing, a bevel pinion loosely mounted on said journal and meshing-withthe bevelgear Wheel made integral with the spur gear-wheel made iiitegr-alwith" of I gear wheel, a suitable friction clutch slidably mounted on the drive-shaft and serving to connect said loose bevel pinion with said drive-shaft, a suitable'shifter for said clutch, a spur pinion rotatably mounted on a" stud' shaft secured to the casing and meshing" with said spur gear wheel, a power transmission disc fixed with relation to said spur pinion and carrying a series of concentric gear wheels on its free face, a spur-pinion slidable on said drive shaft and capable of meshing with any oneof said-concentric gear wheels or with neither of them, a suitable shifter for moving said spur-pinion along the drive-shaft, substan tially as set forth.

A changeable speed gear transmission for motor-cars and the like comprising a casing the rear wheel axle shafts being journaled at one end by means of ball bearings within said casing, a differential box housed within the casing and mounted on said rear wheel axle shafts; a spur gear wheel of large diameter made integral with said box and acting as a fly-wheel for the whole gear,- a bevel gear wheel made i'nte gral with said spur gear-wheel, a driveshaft of angular cross section journaled within said casing, a journal of circular cross section at the end of said shaft located within the'casin'g,= a bevel pinion loosely mounted on' said journal and meshing with the bevel-gear wheel made integral with the spur gear wheel; a suitable friction clutch slidably mounted oir the drive-shaft and serving to connect said loose bevel pinion with said drive-shaft, a suitable shifter for said clutch, a spur pinion rotatably mountedon a stud shaftse cured to the casing and meshing with said spur gear wheel; a power tran'sinis'sioii disc fixed with relation to said spur pinion and carrying a series of coi'icehtric gear wheels on its free face,- a spur-pinion sl'idable' on said drive shaft and capable of meshing witlr any one of said concentric gear wheels or with neither of them a suitable shifter for moving said sp'ur-pinion along the drive-shaft; substantially as set forth.-

In testimony whereof I have hereunto set my hand in presence of two witnesses.

ANDRE IDE. YVitnesses:

O. SCHATZ, GEORGES DELLRoUsE. 

